How would you explain the average density of an asteroid being about 2 g/cm3, if the density of rock is usually around 3 g/cm3?
A. The asteroid is made of fragments only loosely held together by gravity.
B. The asteroid contains an unusually large quantity of helium.
C. The asteroid is of the stony type, not the iron type.
D. The asteroid contains significant quantities of icy compounds.
Answer: A
You might also like to view...
Pressure: The weight of a 1200-kg car is supported equally by the four tires, which are inflated to the same gauge pressure. What gauge pressure is required so the area of contact of each tire with the road is 100 cm2?
A. 12 × 105 Pa B. 12 × 104 Pa C. 2.9 × 105 Pa D. 2.9 × 104 Pa
A barometer that does not use mercury is a(n) ______________ barometer
Fill in the blank(s) with correct word
If a doubly-ionized oxygen atom is accelerated from rest by going through a potential difference of 10 V, what will be the change in its kinetic energy?
a. 10 eV c. 20 eV b. 40 eV d. none of the above
Wave Characteristics: A 7.55 × 1014 Hz electromagnetic wave travels in carbon tetrachloride with a speed of 2.05 × 108 m/s. What is the wavelength of the wave in this material?
A. 272 nm B. 301 nm C. 338 nm D. 361 nm E. 397 nm